AK8996 perform high precision temperature compensation, and adjust the temperature characteristics of offset voltage and span voltage with the second order characteristics compensator.

AK8999A has the 1st order coefficient or the quasi 2nd order coefficient by piecewise linear approximation.

Since an internal resistor of 32kΩ(AK8996)/146kΩ(AK8999A) is built in the the output stage, Band-limiting is realized with a combination of external capacitors. The internal LPF (fc: 1kHz, 500Hz, 250Hz) is available by the EEPROM data in AK8999A. In this case the external capacitors are not needed.AK8996 has SPI serial interface (SCLK, SDI, CS) which can directly access to MCU. AK8999A has the original two-wire serial interface (CSCLK, VOUT).

note1: The 1st order coefficient or the quasi 2nd order coefficient by piecewise linear approximation (1st order independent coefficients can be set for high and low temperature side on the basis of 25°C)